Description
1. Product Overview
Part Number: 869-E-P5-P5-B5-H-R-R-A-L-N-G-M-P-F-B-SE-N-N-B-N
Manufacturer: GE Multilin. The 869 series is a high-end integrated motor protection and control relay belonging to GE 8-series protection platform. This full-configured model serves as a core critical spare part for medium and high-voltage motor loops in power, mining, oil & gas and chemical industries, featuring high stability, programmable logic and comprehensive motor diagnostic functions.
Application Scope: Designed for 3kV~13.8kV medium/high-voltage induction and synchronous motors. Widely deployed for power plant auxiliary motors, mining crushers, oil & gas transfer pumps, metallurgy fans and chemical process motors. It integrates full-set electrical protection, start-stop control, condition monitoring, fault diagnosis and multi-protocol communication functions.
Product Definition: All-in-one digital motor protection and management system with electrolytic-capacitor-free long-lifespan hardware. It integrates high-speed tripping protection, thermal overload protection, electrical fault interlock, motor start-stop management, vibration & temperature monitoring, fault recording, SOE logging and programmable logic control. It supports seamless connection with DCS, SCADA and power monitoring platforms, acting as the core control and protection device for high-voltage motors.
2. Model Code Definition
869: High-end medium/high-voltage dedicated motor protection series
E: Enhanced standard hardware architecture
P5/P5: 5A-class CT/PT secondary sampling specification
B5: Standard industrial I/O point configuration
H: Wide-temperature industrial reinforced hardware grade
R/R: Universal AC/DC power supply + standard trip/alarm relay output
A: Standard LCD operation panel
L: Advanced user-defined programmable logic support
G: Full-function ground fault protection
M: Dedicated motor operation & thermal accumulation algorithm
P: Advanced protection function package with adaptive curves
F: Full fault recording and event logging function
B: Standard safety interlock function
SE: Dual communication architecture of serial port + Ethernet
N-N-B-N: Standard factory firmware and non-customized configuration
3. Six Core Hardware Functional Units
3.1 High-Precision Analog Sampling Unit
Supports full sampling of three-phase current, three-phase voltage, residual current and residual voltage with 0.2-class accuracy. Built-in filtering, surge clamping and EMI anti-interference circuits accurately capture subtle motor overload, current unbalance and ground leakage anomalies to support precise protection action and condition monitoring.
3.2 Full-Range Motor Protection Logic Unit
Adopts GE exclusive FlexCurve flexible protection curves, integrating instantaneous overcurrent, definite-time overcurrent, thermal overload, motor locked rotor, start timeout, frequent start interlock, phase sequence error, phase unbalance, ground fault, over/under voltage and neutral overvoltage protection. All protection settings, enable status and delay time are fully configurable to adapt to various high-voltage motor operating conditions.
3.3 Programmable Logic & Control Unit
Supports visual user-defined programmable logic for interlock/blocking, start-stop conditions and fault linkage control. It precisely manages the whole process of motor starting impact, steady operation and shutdown interlock, avoiding mis-operation and faulty running to meet complex process interlock requirements.
3.4 Fault Recording & Diagnostic Unit
Non-volatile mass storage retains massive millisecond-timestamp SOE records and multi-channel fault waveforms after power failure. Built-in motor health diagnosis algorithm counts start times, operating duration and thermal accumulation to predict potential faults such as winding aging and bearing abnormality.
3.5 Multi-Protocol Redundant Communication Unit
Dual communication design of serial port and Ethernet, natively supporting Modbus RTU/TCP, DNP3 and IEC61850. Dual-link redundant uploads operating data, fault alarms and parameter settings to upper systems, realizing remote configuration, monitoring and unattended operation.
3.6 Industrial Reinforced Long-Lifespan Unit
Electrolytic-capacitor-free hardware design eliminates common aging failure defects of traditional relays. Full PCB conformal coating, wide-temperature resistance, vibration resistance and strong anti-EMI capability support 24/7 stable fanless operation in harsh industrial environments.
4. Technical Specifications
4.1 Basic Hardware Parameters
Item | Specification |
|---|---|
Model | 869-E-P5-P5-B5-H-R-R-A-L-N-G-M-P-F-B-SE-N-N-B-N |
Applicable System Voltage | 3kV ~ 13.8kV High-Voltage Motor Loop |
CT/PT Rating | Standard 5A Transformer Adaptation |
Power Supply | Wide-range Universal AC/DC |
Sampling Accuracy | 0.2 Class for V/I, 0.5 Class for Power |
Protection Action Time | ≤15ms for Instantaneous Trip, Adjustable Delay for Normal Protection |
Hardware Feature | Electrolytic-Capacitor-Free Long-Life Design |
Cooling Mode | Fanless Passive Heat Dissipation |
4.2 Communication & Functional Parameters
- Interface: Serial + Ethernet dual redundant communication links
- Protocols: Modbus RTU/TCP, DNP3, IEC61850
- Storage: Mass SOE event records and multi-channel fault waveform recording
- Logic: User-defined programmable logic, flexible protection curves
- Diagnosis: Motor thermal accumulation monitoring, start statistics and fault traceability
4.3 Environmental & Safety Compliance
- Operating Temperature: -40℃ ~ +85℃ industrial wide temperature grade
- Storage Temperature: -40℃ ~ +90℃
- Humidity: 5%~95%RH non-condensing, non-corrosive environment
5. Product Advantages
1. Capacitor-free long-life architecture eliminates aging, bulging and leakage failures of traditional electrolytic capacitors, realizing long-term maintenance-free operation and reducing downtime risks.
2. Motor-dedicated intelligent algorithm optimizes protection logic for high-voltage motor starting surge, locked rotor and thermal accumulation, avoiding mal-operation and refusal of general protection relays.
3. Flexible configurable FlexCurve adapts to motors with different load and start characteristics, supporting flexible setting optimization and on-site process modification.
4. Full motor health diagnosis upgrades maintenance mode from passive fault tripping to active hidden danger early warning by long-term monitoring of operating status and thermal loss.
5. Dual redundant communication prevents data loss and monitoring blind spots caused by single link failure, ensuring real-time data transmission for unattended smart power stations.
6. Industrial reinforced reliability adapts to harsh environments such as mining, oil & gas and metallurgy with wide-temperature, vibration-resistant and strong anti-EMI performance.
6. Application Scenarios
1. Power Plant Auxiliary Systems: Protection and monitoring for 6kV/10kV high-voltage auxiliary motors such as fans and water pumps.
2. Oil & Gas Chemical Industry: Continuous production process motors including injection pumps, transfer pumps and compressors with fault quick-tripping and process interlock functions.
3. Mining & Metallurgy Industry: Heavy-load equipment motors such as crushers, hoists and blast furnace fans adapting to vibration and dusty working conditions.
4. High-End Industrial Power Distribution: Intelligent management and stable protection for 10kV high-voltage power motors in industrial parks and data centers.
5. Legacy System Retrofit: Direct in-situ replacement for aging imported motor protection relays with compatible configuration migration and convenient upgrading.
